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Sandra and Daniel Davey bought their dream home in Knocklyon, Dublin over four years ago. However, the house is so cold that their main aim is to make their home more liveable.

Claudia and Tom's 1920s bungalow with panoramic views of Tramore Bay pushes architect Dermot Bannon to the limit as he tries to deliver the perfect home with the perfect view.

Dermot Bannon heads to Borrisoleigh, Co. Tipperary. Joe has lived the bachelor life up until now and his house shows it. Dermot sees exactly why bride-to-be Mary wants a redesign.

In the first episode of the twelfth series architect Dermot Bannon and garden designer Diarmuid Gavin combine forces to create a dream home and garden for a couple in Athgarvan in Co. Kildare.

Dermot Bannon returns for a new series, as the urbane architect accepts a challenge from singer Daniel O'Donnell and his wife Majella to reconfigure their beloved Kincasslagh home.

A teacher plans to move into her grandparents' old 19th-century farmhouse in Co Meath before her wedding. Dermot Bannon discovers the property is outdated, cold and cramped, and begins making plans for a single storey extension. However, costs soon escalate as major problems are discovered with the drains and septic tank.

Architect Dermot Bannon takes on more design projects. At Sutton in Dublin, Dermot extends a beloved childhood home into a sumptuous new one for Hannah, James and their sons.

Leonard and Caroline live in house once owned by Leonard's grandparents in the south Dublin suburb of Dundrum - a 1960s three-bed semi that hasn't changed at all since the couple bought it two years ago.

Architect Dermot Bannon is challenged to blend a 1970s chic theme with a modern design in a house near Mullingar, Co Westmeath.

Sally-Ann, her husband Trevor, and their four children live in Sally-Ann's childhood home - a huge, distinctive 1970s architect-designed home outside Mullingar in Westmeath that they've dreamed of rennovating for years.

This week, Dermot wants to create a wheelchair friendly house in Malahide that's also a welcoming family home

Struggling with a tight schedule, a limited budget and the traditionalist taste of his clients, can Dermot balance their love of classic farmhouse design with his own vision of clean urban functionality?

Jean Robinson and Daithi Elliffe have bought themselves what they hope will be an ideal family home in a unique location - a listed 19th century former schoolhouse at Kilternan with spectacular views of the Dublin mountains, but all is not as it appears.

Catherine Bennett and her youngest daughter Sarah Jane are keen to downsize from their huge 13-bedroomed house in Mullingar. Dermot helps design their dream home on the site of a 3-bed bungalow that’s been uninhabited for the last nine years.

This week Dermot goes to Cork to work with a family spanning three generations - who all have different ideas on how to improve their home.

Dermot Bannon helps a family to transform their 70s bungalow outside Tipperary into a modern family home.

Dermot helps a couple in Dundrum to extend their cottage that has been home to three generations of the McDonnell clan

After a series of delays and an ongoing failure to see eye-to-eye with the clients Dermot comes close to walking off a project in Wicklow

Dermot is in Tullow, with Tom and Lisa who want to renovate their 19th century farmhouse.

Dermot is in Clontarf, with Denise and Ben who desperately want a second bathroom for their family home, but their budget is limited

Dermot is in Dalkey, with a budget of €180,000, he must come up with an innovative design to match their exacting requirements within the confines of an incredibly tight site.

Dermot is in Laytown, co.Meath, with a budget of €60,000, Dermot's worry "is even if you took away the shoddy workmanship you'd spend the 60k, this is a really difficult one..."

Dermot tells a couple, who have bought a villa style cottage in their dream location of Blackrock, that they've essentially bought themselves a "mud hut"!

Dermot Bannon meets Glenn Keating and Gustav van der Westhuizen who live in Grace Park, Drumcondra, with their 5-year-old son Noah and two pet Weimaraner dogs.

Eimear Farrell and her 8 year old daughter Hannah with a budget of €20,000 (our smallest budget in the series) need the entire downstairs of the 2 bedroomed home in Killiney completely re-modelled.

Dermot helps Nora Sommerfield to turn her Ratoath house into a home.

In Drogheda, Dermot attempts an architectural flight of fancy at the 1930s home of long-haul airline Pilot Ian and his girlfriend Claire.

Dermot travels to Baldoyle, north Dublin, where he flips the upstairs and downstairs of Mel and Aoife's bayside home to make the most of a spectacular view.

In Maynooth, Dermot redesigns George and Sinead's 1850s coach house only to discover the entire building has been compromised by a parasitic fungus.

Dermot Bannon concludes the series three of his favourite properties from earlier shows. He is reunited with pub owners in Longford whom he persuaded to make use of empty space, a couple who moved from California to Bishoptown and a semi-detached home in Malahide designed to be completely wheelchair-accessible.

At the seaside village of Rush, Dermot does his best to keep up with sprout farmer Enda and his extraordinary self-build project.

In North Dublin Dermot doubles the size of a 1940's Malahide cottage to create the dream home Robbie and Julie have spent 20 years saving for.

Pat and Marita plan to renovate and extend the 1950s 3-bed bungalow where Pat grew up - a tiny, dark house currently occupied by Pat's 93-year-old mother Mary. But with three generations of the family to accommodate - each needing their own personal space - architect Dermot Bannon has his work cut out.

This week, Dermot Bannon helps a couple in Enniscorthy renovate an old cottage and prepare their home for a new baby. For John and Anna Kinsella it is important to get their home in order.

In this week's programme, the penultimate of the series, Dermot finds himself the dream job. Liz and Malcolm Currie live in a large four-bedroomed house in Dalkey, on Dublin's southside.

This week, Podge and Jo Ussher want to turn their Wexford cottage from a holiday home into their permanent home without sacrificing any of its 1930s charm. Their house needs a lot of work.

Declan and Judy Cadwell from Clontarf share a small terraced home with their three sons, Christopher 19, Ross 17 and Jake 13. But only just.

Jim and Siobhan Doyle live in a beautiful old house over looking Dublin Bay in Sutton. See Dermot Bannon transform the rambling old house into a beautiful new space.

Architect Dermot Bannon helps Senator Katherine Zappone and Dr Ann Louise Gilligan renovate a dilapidated hunting lodge in Brittas, Dublin.

Architect Dermot Bannon returns with a brand new series of Room To Improve featuring more of his innovative and contemporary design projects. In the first episode Dermot travels to the village of Puckaun in north Tipperary, to meet teachers Darragh Egan, his partner Sarah Lovett and their three month old son Donagh.

Dermot Bannon helps two teachers to renovate a cottage in Moate, Co Westmeath. Ther property is hemmed in on all sides, but the owners hope to come up with a design that gives them their privacy. The building contractor suggests it may be simpler to tear it down and start from scratch, and Dermot is soon proposing some unusual designs that have never been seen in the village before.

This week, Dermot comes to the rescue of Cathy and Michael Keane who bought their house when it was being used as a cowshed.

Room to Improve starts with Jennifer Burke and Quenton McGrath, Dermot knows exactly how to solve their problem but it means destroying a lot of the work the couple have already done.

Dermot is in Kilkenny with the Kirwan family where everything that can go wrong has gone wrong.